This TT DC geared motor with double shaft and integrated Hall encoder (2 channels) is ideal for precise speed measurement and direction/displacement detection in robotics and DIY projects (e.g. Arduino / Raspberry Pi, smart car, STEM). The encoder provides two phase-shifted square wave signals (H1/H2), which means that the direction of rotation can be reliably determined in addition to the speed.
Technical details
Pin assignment / connections
Encoder (Hall):
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G = Hall supply GND
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V = Hall supply + (typically 3.3 V or 5 V, depending on the microcontroller)
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H1 = Hall output channel 1 (square wave)
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H2 = Hall output channel 2 (square wave)
Motor:
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M+ = motor supply plus
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M- = Motor supply minus
Important:
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The voltage V-G (encoder) depends on your controller (typically 3.3 V / 5 V).
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The voltage M+-M- is the motor voltage (6 V or 12 V depending on the variant).
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There is a magnetic disk on the shaft (N-/S-pole ranges).
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The Hall sensor recognizes the poles and generates a square wave from them: e.g. high at S pole, low at N pole.
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H1 and H2 are arranged at different positions → the signals are out of phase (quadrature).
This allows you to: -
Calculate thespeed from the frequency/period duration
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Determinethe direction of rotation via the phase position H1 vs. H2
Speed calculation (from period duration)
If the magnetic disk P generates poles (or pole segments) and the measured period duration of the Hall square wave T is: n=60/P⋅T
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n in rpm
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T in seconds
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P = number of magnetic poles/segments (depending on the magnetic disk used)
Dimensions
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Total length: ~ 79.95 mm
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Gearbox housing width: ~ 22.40 mm
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Motor/housing height: ~ 25.79 mm
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Output shaft: Ø ~ 5.40 mm
Typical applications
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Encoder wheel / odometry (displacement measurement)
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Robot chassis, smart car, line follower
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Speed control (PID), RPM measurement
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Teaching/STEM projects, prototyping
Scope of delivery
- 1x TT geared motor with Hall encoder (AB) & double shaft - 300 rpm, incl. connection cable
